We at Pro-Ject Audio Systems strongly believe that a power supply is a very important part of the audio path and significantly contributes to the sonic quality of an audio product. In order to offer a maximum in sound quality and optimum isolation of the phono preamplifier from mains interferences, we designed the Power Box RS Phono with battery power output. Pure and clean energy is very important everywhere where low level signals are amplified. A turntable cartridge deliveres the lowest signal level from all the known sources of audio signal. Typical level of a low output MC cartridge is about 0.2mV = 0.0002V. Such low level signal is very vulnerable against all kinds of interferences and noise.

How it works?

When Power Box RS Phono is connected to Phono Box RS and switched ON, only the accus are connected (adapter and charger are physically disconnected) so Phono Box RS is completely isolated from mains interferences. When accu voltage decreases and reaches certain limits, further playback will be a danger for status of the battery, the charger is automatically connected. This status is indicated by LED on the front panel. Everything continues without any limitation and playback is possible, but the advantage of completely isolating for the charging period is lost. Even if the biggest advantage is temporarily not available, the battery now works as very big filtration bank and the sound is still far better than in case of using the standard power adapter. When accu is fully charged, the charger is disconnected and again Power Box RS Phono powers Phono Box RS only from accu packs.

ATTENTION Connect it Power RS MiniXLR-Phono DC15V 2,1 does not fit Xtension 10, 12 and the Signature models (too high power consumption). For these models Connect- it Power RS is available on request as special order.

FAQ - Hints for using Power Box RS Phono

Q: What happens if batteries are not charged frequently?

A: This unit contains Li-ion batteries which offer longer lifetime if not stored discharged. As the battery self-discharges over time, its voltage gradually diminishes. Therefore we strongly recommend to fully charge batteries after purchase of the unit and then at least once per 6 months regardless the unit was in use or not. If the battery of the unit is in low power state, the red charging LED will blink. When the unit moves to normal charging mode, this will be indicated by a steady LED. Full charging procedure can last up to approximately 12 hours to reach maximum capacity.

Q: Is there an audible difference between usage of special Connect it Power cables instead of standard ones, when Power Box RS power supplies are used?

A: Yes. Power Box RS Phono is quite sensitive on influence of power cable quality. Try to connect it with ordinary cable and then check it with Connect It Power cable. On high resolution systems with CD Box RS and Pre Box RS digital, the better cable offers better separation of instruments and better localization.